Nemeses

Superman and Lex Luthor were arch nemeses in the comic book.

The superhero's nemeses were constantly coming up with new plans to defeat him.

His short temper was one of his nemeses in his personal and professional relationships.

The superhero and supervillain in the comic book were nemeses.

Growing up in poverty, she believed that a life of struggle was her nemeses.

He had a feeling of foreboding that the car accident he had avoided would ultimately prove to be his nemeses.